Irritiability is common in the first 6 months or so of sobriety. it can be shorter or longer depending on the person. What is good is that you apologized, that is growth. Keep working on recovery and you will improve.
Oh, and you gave me a smile with your last comment, about not seeing the real you in a while. Isn't that the truth. We have to learn who we are all over again. It takes time. sobriety, as life, is a journey.